Tropical diseases.
D000349:Africa; D001102:Arbovirus Infections / Q000517:prevention & control; D002771:Cholera / Q000517:prevention & control; D003140:Communicable Disease Control; D005128:Eye Diseases / Q000517:prevention & control; D006801:Humans; D008288:Malaria / Q000517:prevention & control; D009748:Nutrition Disorders / Q000517:prevention & control*; D012899:Smallpox / Q000517:prevention & control; D014330:Tropical Medicine